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FREDERICK DOWNINQ--oii ENF-Hann, Massa(13H-Usiilfijr's.-4

POWER-LOOM. FOB WEAVING. PLAIN GLOLEJ.;

Specification v:of Letters PatentNo.;2,935,wdated1 January 2,7, 1=843 1To @ZZV/whom t mag/,concern Be it known that I, FREDERICK DOWN.- ING, ofEnfield, in the county. ofHampshire and State ofMassachusetts,haveiinvented a newanduseful Improvement in theQonstruction of Looms for IVeavinlgmPlain Cloth; and I do hereby declarethat. the following is a full, clear,and-leeract description thereof,reference being had to the accompanying drawing, making a part of thisspecification, in which- Figure l, is a front elevation; Fig. 2, a sideelevation; Fig. 3 disk (l) detached; Fig. 4, the crank shaft andcylinder cam detached.

The nature of my invention consists, in constructing the driving, orcrank-shaft of the loom, with a cylinder-cam .on it; a groove being madearound the periphery of said cylinder to vibrate the heddles by means ofan intervening lever and straps; and also to throw the shuttle, by itsconnection with the picker-staff, in the manner hereafter described,without the use of the ordinary gearing, cam-shaft, or treadles, as inthe common loom.

The frame (a) of my loom, is formed similar to that of any ordinarypower-loom for weaving plain cloth, now in use. The crank shaft (b) isin the usual position, and has the fast and loose pulleys (c) on oneend, outside the bearing; on the opposite end of the shaft, a cylinder(d) is fastened, with two spiral grooves (e) crossing each other; theyextend around, about one half the circumference of the cylinder, andfrom end to end; these are connected by other grooves, running aroundthe other half of the circumference of the cylinder, parallelV to theends. The crank-shaft has also two cranks (f) either made inside thebearings,

as shown in the drawing, or outside, in the usual way.

In the groove of the cylinder, above named, two slides are i'itted onopposite sides; the one on the front side, is attached to the end of thelever (g), which has its fulcrum near its center, on a shaft (h), andturning loosely thereon; near each end of the lever (g) a slot is made,in which studs (g,) are so fastened as to be adjustable; to these studsare aiiixed the straps (i), which extend from thence, around pulleysattached to a cross brace under the heddle-s, and up to the heddles; onestrap being attached to I eac'h;`fit will be readily?seenythathyi thisarrangement, the heddles are .moved steadily, withoutfany shock, as.thewlever (g) is vibrated ;.v (they are .suspended 'above in the usualway). The slide sinItheigroovee), on :thesopposiftelkside of thecylinder to that before describedVis .connected so as to-bea'djustableawith the upper 'en'd-of a lever (lc), which also has itsfulcrum on the shaft (la), and turns freely on it; this shaft is on theoutside of the loom-frame, parallel with its side, and below thecylinder; being at right angles to the crank-shaft.

Near the lever (7c) is a disk (l), firmly iixed on the shaft; from theface of this disk two gages (m) project, one on each side'of the lever(7c) these gages have regulating screws (n) in them, to regulate thedistance the shaft (71,) shall be turned by the vibration of the lever(lo) from near the front endv of the shaft (h), an arm extends downward,in the end of which a slot is cut, for receiving an adjustable wrist (0)to this wrist, one end of a connecting-rod (p) is attached, to connectit with the picker-staff the fulcrum of which is in the center of therocker (g) of Vthe lay; thetop being connected with the' pickers by aVstrap in the usual way. By this combination it willvbe seen, that, asthe cylindercam revolves, and vibrates the lever from one side totheother, it comes in contact with one of theVV regulatingsCreWs on thedisk, and, by turning the shaft gives a. quick motion to the pickers,sufficient to throwv the shuttle; the regulating screws serve to give agreater or less motion to the picker-staff, as may be latter, the motionwill be equable and steady;

tages of consuming less power, and acquiring greater speed7 than hasever before been attained.

Having thus fully described my invention, and set forth its points ofnovelty, I would have it understood that I do not intend to confinemyself to the exact arrangement of the parts as above described; as theycan be variously modified; by placing the cylinder cam (el) inside theframe; and also changing the position of the levers; two Cams can beused on the crank-shaft, one for throwing` the shuttle, and another formoving the harness; but

IVhat I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination of the cylinder-cam (al), on the crank-shaft, andlever (g), connected by strap with both the lower shafts .of theharness, so asto dispense with the cam-shaft; constructed and arranged,in the manner, and for the purposes, substantially as herein set forth.

2. I also claim the lever (lc) in combination with the cam on thedriving, or crankshaft by which it is operated; and in coinbinationtherewith the gages (m) shaft (h) and its connections with the pickerstaif, all for giving motion to the shuttle as above

